Building-block.



No. 819,100. PATENTED MAY 1, 1906v I. A. VICKERMAN. BUILDING BLOCK.

APPLICATION FILED MAY22,1905.

Snueutoz (1.14 Gummy mlmiw a crmuw co. PMOIQLIDQOGHAPMWQ longitudinalalinement with the extension aforesaid, the passage in one side of therecess overlapping the same, 5 end of .he blocks being adapted to enterthe recesses at the other ends the several blocks structure, whereby-which the following is a portion of the To all whom, it may concern.-

Be it known that I, ISAAC A. VIOKERMAN, a citizen of the United States,residing at Preston, in the county of Fillmore and State of Minnesota,have invented certain new and useful Improvements in Building-Blocks, of

specification.

This invention embodies an improved con struction of building-walls ofthat type consisting of blocks designed to effectively resist thepenetration of frost, moisture, or the like and formed with air-spacesinterposed between the outer and inner faces of the blocks, so thatfrost or moisture must take a tortuous path in order to reach theinterior of the wall.

The block embodying the invention is designed particularly to secure asimplified construction which may be manufactured by simple machines andwhich at the same time possesses a maximum degree of strength because ofthe peculiar arrangement and form of air passage or space providedtherein.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result referenceis to be had to the following descriptionand accompanying drawings, in which- Figure l is a perspective viewshowing a portion of a building-wall in which blocks embodying theinvention are employed. Fig. 2 is a plan view of the wall, bringing outclearly the arrangement of the corner-blocks. Fig. 3 is a perspectiveview of one of the blocks comprising this invention.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

Specifically describing the invention, the block 1 is preferably ofsomewhat rectangular form, as usual, and is provided with alongitudinally-vertical air passage or space 2. Each block 1 is formedat one end with an inwardly-extending recess or cavity 3, and at theopposite end, and preferably in longitudinal alinement with theabove-mentioned cavity 3, is formed an extension 4. An end longitudinalpassage'2 is con- 2 and extends nearly tracted, as shown at theextension 4. The

the entire length of the block curving to and 1,

above mentioned the extensions of the blocks, when are assembled in thewall frost or the like is caused ISAAC A. VTCKERMAN, O

BUILDING-BLOCK.

Specification of Letters Patent. Application filed May 22, 1905.

F PRESTON; memoir."

Patented May 1, 1906 Serial hi0. 261,646.

opposite end of the passage or space wise contracted, as shown at 2extending longitudinally of said portion of the block between the recessor cavity 3 and the inner side of the block. The passage or space 2curves, as shown at 2, merging into the contracted 'portlon 2 beforedescribed. The formation of the passage or space 2 is such as to give amaximum amount of air-space in the body of the block and also at theends consistent with the formation of a substantial article not liableto breakage in handling. Adjacent blocks 1 are spaced together with theextensions i at one end of the block received in the recess or cavity 3at the adj a cent end of the next adjacent block, and the portion 2- ofthe space 2 of one block will overlap the portion 2 of the space 2 ofthe adjacent block, and it will therefore be seen that a wallconstructed with the blocks aforesaid is provided with an air passage orpassages so located that it is impossible for frost or moisture to passfrom the outer face of the wall to the inner side thereof without taking'a tortuous path in order to avoid the airspaces, and this is not likelyto happen for obvious reasons.

The cornereblocks 1 are of a construction similar to that beforedescribed, with the exception that said blocks are formed with a recess3 or an extension 4* at one side there of instead of at the end, asdescribed with ref erence to the blocks used between the corners or endsof the wall. The air passage or space 2 of the corner-blocks 1 isextended at an angle, approximately a right angle, so as to extendlongitudinally of the extension 4:, this being shown at 5, or this airpassage or space is extended at an angle, as shown. at 6, so as tooverlap that portion 2 of the passage or space 2 of the adjacent block1.

Having thus described the invention, is claimed as new is- Abuilding-wall constructed of buildingblocks, each block comprising abody formed with a longitudinal continuous vertical passage extendingfrom one end of the block to the other, an extension projected from oneend of the block longitudinally thereof, the passage aforesaid extendinginto and terminating in said extension, the opposite end of the blockhaving a recess formed therein in what In testimony whereof I affix mysignature at one in presence of two witnesses. IS

AAO A. VICKERMAN.

\Vitnesses LOGAN Gr. BASSETT, Anonrn V. Asnron.

2 is like-

